Steam-valve for train-pipes.



PATENTED APR. 5, 1904.

E. B. GOLD. STEAM VALVE FOR TRAIN PIPES.

- APPLICATION FILED SEPT. 8, 1903.

3 SHEETS-SHEET 1.

N0 MODEL.

INVENTOR: gala/M06 M,

WITNESSES:

By A ftomeys, M

No. 756,491. PATENTED APR. 5, 1904.

E. E. GOLD. STEAM VALVE FOB. TRAIN PIPES.

APPLICATION FILED SEPT. s. 1903. up MODEL. 3 SHEETS-SHEET 2.

No. 756,491. PATENTED APR. 5, 1904. E. E. GOLD.

STEAM VALVE FOR TRAIN PIPES.

APPLICATION FILED SEPT. 8. 1903.

N0 MODEL. 3 SHEETS-SHEET 3.

INVENTOR: WITNESSES; M 5 @2 1 4rd By A/Zoimeys,

UNTTED STATES Patented April 5, 1904.

PATENT OFFICE.

STEAM-VALVE FOR TRAIN-PIPES.

SPECIFICATION forming part of Letters Patent No. 756,491, dated April 5,1904.

Application filed September 8, 1903. Serial No. 172,280. (No model.)

To aZZ whom it may concern:

Be it known that I, EDWARD E. GOLD, aciti- Zen of the United States,residing in the borough of Manhattan, city, county, and State of NewYork, have invented certain new and useful Improvements in Steam-Valvesfor Train- Pipes, of which the following is aspecification.

Steam-pipes for trains, according to some systems, are provided withvalves at the opposite ends of each car. When the steam is on, the valveat the rear end of the rear car is usually left open a very little topermit drainage and the passage of some steam. According to my inventiona valve is provided specially adapted for use as an end valve on suchtrain-pipes. My improved valve permits a regulable slight leakage ofsteam, and for this purpose is provided with means for holding it in anydesired one of a plurality of positions closely adjacent to its closedposition. The possibility of adjusting the opening and holding the valvefirmly in the adjusted position adapts it to trains of diflerentlengths, the operation of the system on long trains being more efficientWhere the opening of the rear end valve is larger than would benecessary for shorter trains.

Certain other advantages in detail are referred to hereinafter.

The accompanying drawings valves embodying the invention.

Figure 1 is a longitudinal section of a complete valve. Figs. 2 and 3are separate views of parts thereof, the former being an under side planof a toothed plate and the latter a top side plan of aspring. Fig. 4 isa section on the line 4 of Fig. 1. Fig. 5 is a longitudinal section ofanother embodiment of the invention. Figs. 6 and 7 are respectively anunder side and a top side plan of certain details. Fig. 8 is alongitudinal section of a third form of the device. Figs. 9 and 10 arerespectively an under side and a top side plan of details. Figs. 11 and12 are plans of the valve in its casing and with the top plate removed.

The stem of the valve and the casing or other suitable fixed structureare provided with complementary interengaging devices, which are pressedinto engagement with each other with illustrate a pressure sufiicient tohold the valve in any one of the desired positions in which it may beset notwithstanding the jarring which it receives and the steam-pressurewhich may be against the valve, but not sufiicient to pre vent themovement of the valve by hand to another position. For example, as shownin the drawings, the cylindrical valve-body A may be arranged tobereciprocated in the easing B by means of an eccentric 0, carried on ashaft D, having its upper end squared to receive a hand-lever E, thecasing being supplied with a plate F, which is removable to permit theinsertion of the movable parts within the casing B.

G is the valve-seat.

The valve as thus far described is a wellknown type, the constructionand operation of which is specifically set out in my Patent No. 585,383,of June 29, 1897. The present improvement is especially adapted tovalves of this type with a rotatable or oscillatory operating-stem and avalve proper moved transversely thereto and bodily toward and from itsseat, because such a valve indicates at once by the angular position ofthe handle the exact position of the valve and can be moved from oneextreme position to the other quickly by a fraction of a complete turnand because by reason of the eccentric or similar motiontransmittingdevice employed the first open ing movement of the valve may be verygradual. The improvement, however, may be ap plied to valves of varioustypes other than that herein shown.

As illustrated in Fig. 1, the top plate F of the valve-casing may beprovided on its under side with a ring H (shown in under side plan inFig. 2) and preferably separately formed of hardened steel and attachedthereto by riveting, as shown, which plate is provided with teeth J,having faces inclined in both directions. For engaging the teeth J, Iprovide a member K, having teeth K, engaging the teeth J and which isformed of spring metal and attached to the shaft D, so that it turnswith the latter. The spring in the member K holds its diametricallyopposite points in engagement with the teeth J under ordinary runningconditions. The spring-prestype.

member K when the valve is shut or nearly shut. The amount of openingrequired at the rear end of the train is always very slight,

even though it is different for trains of different lengths. By makingthe member K double-ended I secure an even and very strong pressure andutilize the spring to hold the valve proper and stem down against theunbalanced upward steam-pressure. The stuffing-box may extend downnearly to the hub of the spring K to prevent such upward movement if thespring should break. The member H is preferably provided with teeth J atdiametrically opposite points, so as to engage both ends of the springmember K simultaneously. Preferably, also, the member H is provided witha series of teeth J at diametrically opposite points half-way betweenthe teeth K in the closed position, which act to hold the valve wideopen. Figs. 5, 6, and 7 illustrate another form 0 the invention appliedto a valve of the same In this case the fixed member of the holdingmeans is formed on or applied to the under face of "the stufiing-boxmember L, which screws into the movable top plate F, as shown. The underside of the member L is provided with inclined teeth J which may beformed entirely around the face of the member L or may be formed only atintervals, like the teeth J and J of Fig. 2. Cooperating with the teethon the member L'is a member M, fitted to turn with the shaft D andpressed upward by a helical spring N, surrounding the shaft. The memberM may be a complete annulus, as shown in Fig. 7 with teeth arrangedentirely around it, or may have merely an elongated double-ended shapewith its ends toothed to engage the teeth of the member L. The operationis substantially identical with that of the construction shown inFig. 1. The toothed members L and M are held in engagement with eachother by means of the spring N so firmly that the valve is held in anyposition to which it is moved under all ordinary circumstances. When,however, it is desired to change the position of the valve, the lever Emay be turned by hand, the inclined interengaging teeth sliding overeach other and the spring N yielding to permit this and the turning ofthe shaft.

, Another suitable construction is illustrated in Figs. 8, 9, and 10,being here also applied to the Gold type of valve. The stuffing-boxmember L in this case instead of being provided with inclined teeth isprovided with a conical friction-face J Amember M is mounted on theshaft D to turn with the same and is provided with a conical facefitting the face J 3 of the member L. A spring N holds the parts L and Min close frictional engagement and prevents the turning of the shaft Dand the movement of the valve A under ordinary running conditions. Whenthe lever E is turned by hand, however, the spring N yields and lessensthe degree of contact between the conical faces of L and M and permitsof moving the valve to any desired position. The frictional engagementis effective for any position whatever and permits of finer adjustmentof the position than do the structures shown inFigs.

1 and 5.

A feature of improvement designed especially for end valves (understoodbest from Figs. 1, 11, and 12) is the limitation of the movement of thevalve-body or valve proper away from its seat, so as to limit therotation of the stem and to permit the valve to close only the outletend of the casing, communication between the valve-chamber and theinletpipe being free in all positions. The cylindrical valve proper, A,reciprocates in the axial line of the train-pipe and rests in asubstantially cylindrical bearing 0, which is preferably cast with thecasing and embraces the valve proper at its sides. A-stop, preferably inthe form of a rib P, also formed integrally with the base of the casing,is in position to engage the rear end of the valve proper, A, when thelatter is retreated sufficiently from its seat G to leave a wide openpassage for the steam. In Fig. 11 the valve is shown closed and in Fig.12 open.

Though I have described with great particularity of detail certainembodiments of my invention, yet it is not to be understood that theinvention is limited to the specific constructions disclosed. Variousmodifications of the same in detail and in the arrangement andcombination of the parts may be made by those skilled in the art withoutdeparture from the invention.

What I claim is 1. In a steam-valve in combination, arotatableoperating-stem substantially fixed against longitudinalmovement, a pair of interengaging members one fixed and the otherrotatable with the operating movement of said stem, said members beingyieldingly held in engagement so as to holdthe valve fixed in theposition to which it is moved under ordinary conditions, and to yield topermit the movement .of the valve by hand.

2. In a steam-valve in combination, a rotatable operating-stemsubstantially fixed against longitudinal movement, a non-rotatablemember having a beveled tooth, a member rotatable with said stem andhaving teeth engaging the tooth of said fixed member, and one of saidmembers being pressed against the other with a yielding pressure so asto permit a nice adjustment of the opening and to hold the valve fixedin position under ordinary conditions, but to permit its movement byhand.

3. In a steam-valve in combination, a valvecasing, a valve propertherein, a rotatable operating-stem, said valve proper being moved in adirection transverse to said stem, and means within said casing forholding said valve impositively locked in position closely adjacent toits closed position.

4. In a steam-valve in combination, a valvecasing, a valve propertherein, a rotatable operatin -stem, said valve proper being moved in adirection transverse to said stem, and means within said casing forholding said valve impositively locked in its wide-open position.

5. In a steam-valve in combination, a valvecasing carrying a toothedmember H, an operating-stem carrying a spring member K with teethengaging the teeth of said member H and pressed thereagainst with aspring-pressure, said teeth being beveled so that said valve is heldfixed under ordinary conditions, but is movable by hand.

6. In an end train-pipe valve in combination, a valve-casing havingconnections at opposite ends for the train-pipe, a valve proper movablein the axial line of the train-pipe, a seat at one end of the casingagainst which the valve proper may rest and close the train-pipe at suchend, the movement of the valve proper tion, a valve-casing havingconnections at opposite ends for the train-pipe, a valve proper movablein the axial line of the train-pipe, a seat at one end of the casingagainst which the valve proper may rest and close the train-pipe at suchend, and a stop in said casing for limiting the movement of the valveproper toward the opposite end of the casing.

8. In an end train-pipe valve in combination, a valve-casing havingconnections at opposite ends for the train-pipe, a valve proper movablein the axial line of the train-pipe, a seat at one end of the casingagainst which the valve proper may rest and close the train-pipe at suchend, the movement of the valve proper toward the opposite end of thecasing being limited to prevent closing the train-pipe at said oppositeend, and means for permitting a nice adjustment and locking said valvein various positions to which it may be moved.

In witness whereof I have hereunto signed my name in the presence of twosubscribing Witnesses.

EDWARD E. GOLD.

